Resolva as equações
5(X-1)=30
2 (X-1)-7=16
7 (X-2)=5(X-3)
2(3X-5)-X=10-3Y
2(X-5)+4 (X-1)=0
5(X-1)=30
2 (X-1)-7=16
7 (X-2)=5(X-3)
2(3X-5)-X=10-3Y
2(X-5)+4 (X-1)=0
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5x-5=30
5x=35
x=7
b)2 (X-1)-7=16
2x-2-7=16
2x=25
x=25/2
c)7 (X-2)=5(X-3)
7x-14=5x-15
2x=1
x=1/2
d)2(3X-5)-X=10-3Y
6x-10-x=10-3y
5x=20-3y
x=(20-3y)/5
e)2(X-5)+4 (X-1)=0
2x-10+4x-4=0
6x=14
x=7/3